DUNSTABLE, MA - On May 23rd, Dunstable firefighters were dispatched to a reported fire inside a building on Lowell St. Companies arrived to find heavy smoke showing from a large 100'x50' commercial building. C1 struck a working fire, bringing in mutual aid to the scene and to cover. Heavy fire was found to be extending through the attic and a second-alarm was struck. Companies stretched multiple hand lines and conducted an interior attack had the fire knocked down in a short amount of time.